WO2014026370A1

WO2014026370A1 - Method and device for data transmission

Info

Publication number: WO2014026370A1
Application number: PCT/CN2012/080281
Authority: WO
Inventors: 李龠; 郭小龙; 朱松; 杨飞
Original assignee: 华为技术有限公司
Priority date: 2012-08-17
Filing date: 2012-08-17
Publication date: 2014-02-20
Also published as: US20150163695A1; US10756942B2; US9923754B2; US10218559B2; CN108306895A; CN103875224A; CN103875224B; US20190173733A1; US20180167256A1

Abstract

Provided is a method for data transmission. The method comprises: packaging media access control (MAC) payloads corresponding to multiple user equipment (UE) into one MAC packet data unit (PDU), where the MAC PDU comprises a packet header, the MAC payloads, and identity information of each UE of the multiple UE, the packet header comprises multiple packet sub-headers, the multiple packet sub-headers comprise packet sub-headers respectively corresponding to the MAC payloads corresponding to each UE in the multiple UE, the MAC payloads corresponding to each UE comprise a MAC control element (CE) and/or a MAC service data unit (SDU), and the identity information is used for identifying each of the UE; and, transmitting the MAC PDU. Correspondingly, also provided are a method and device for data reception. In the solution, by transmitting the MAC PDU having packaged the data corresponding to the multiple UE, where the MAC PDU comprises the identity information of each UE, transmission of the MAC PDU in multiuser coordinated communication is implemented.

Description

Data transmission method and device

Technical field

Embodiments of the present invention relate to the field of wireless communications, and in particular, to a data transmission method and apparatus. Background technique

With the rapid development of mobile communication technologies, various types of mobile communication systems have emerged, for example, a GSM (global system of mobile communication) network, and a general packet radio technology (GPRS: general packet). Radio service ) network, wideband code division multiple access (WCDMA) network, CDMA2000 network, time division-synchronous code division multiple access (TD-SCDMA) network, global wave interconnection WiMAX (Worldwide Interoperability for Microwave Access) network, and Long Term Evolution (LTE). In addition to providing voice communication services, these mobile communication systems usually provide data communication services, so that users can use the data communication services provided by these mobile communication systems to upload and download various data.

However, current communication means are to send or receive data for a single user equipment (UE: user equipment). Even if other enhanced communication means are used to improve the reliability and/or throughput of data transmission of the user equipment, for example, CoMP (Coordinated Multipoint) is used in the LTE system to improve the reliability of the user equipment at the cell edge. Sexuality, using carrier aggregation (CA) to improve user throughput, is still the operation of a single user equipment. Once the channel conditions of the user equipment deteriorate, the throughput and/or reliability of the data transmission of the user equipment will drastically decrease.

This introduces multi-user cooperative communication, i.e., the data transmission between the base station and the first UE is also forwarded by the second UE, which provides for the selection of the path of the air interface, thereby achieving multi-user diversity.

The prior art does not provide a scheme of how to transmit a media access control packet data unit (MAC PDU) for multi-user coordinated communication. Summary of the invention

In view of this, embodiments of the present invention provide a data transmission method and apparatus to solve the problem of how to transmit a MAC PDU of multi-user cooperative communication.

In a first aspect, a data sending method is provided, where the method includes:

The media access control MAC payload corresponding to the multiple user equipments UE is encapsulated in a MAC packet data unit PDU, where the MAC PDU includes a packet header, the MAC payload, and identifier information of each UE in the multiple UEs; The packet header includes a plurality of sub-packets, and the plurality of sub-packets are sub-packets corresponding to MAC bearers corresponding to each of the multiple UEs, and the MAC bearer corresponding to each UE includes a MAC control unit CE and/or a MAC service data unit (SDU), the identifier information is used to identify the UEs;

Send the MAC PDU.

In a first possible implementation manner of the first aspect, the data corresponding to the multiple UEs is encapsulated in a MAC PDU, including:

And MAC addresses corresponding to the multiple UEs are encapsulated in the MAC by the respective UEs.

In the PDU, the location of the MAC bearer corresponding to one of the UEs is consecutive, and the location of the sub-packet corresponding to the MAC payload of the one UE is continuous.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the identifier information is a value represented by a reserved bit of each sub-packet header of the multiple sub-packets, where The value represented by the reserved bit corresponds to the plurality of UEs.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner, the identifier information is a MAC CE for a 7-carrier UE identifier, where the UE identifier is the And the UE is configured to carry the MAC CE that is used to carry the identifier of the UE and corresponds to one UE identifier. The MAC CE used to carry the identifier of the UE is in all MAC loads of the UE. A location indicating a location of all MAC bearers of the one UE in the MAC PDU. With the third possible implementation of the first aspect, in a fourth possible implementation, the MAC CE used to carry the UE identifier is located at the first or last of all MAC loads of the one UE. One.

With reference to the third possible implementation manner of the first aspect, or the fourth possible implementation manner, in a fifth possible implementation manner, the identifier information indicating the UE is a cell radio network temporary identifier C- RNTI.

With reference to the first possible implementation manner of the first aspect, in a sixth possible implementation, all sub-packets corresponding to each UE include a specific sub-packet header, where the specific sub-packet header is used as the The identification information of the UEs.

With reference to the sixth possible implementation manner of the first aspect, in a seventh possible implementation, the specific sub-packet header includes a 2-bit reserved bit, and the reserved bit in the specific sub-packet header is set to be the first specific a value, and the first specific value in the specific sub-packet header corresponding to all UEs is the same; in the packet header, the groups corresponding to the respective UEs appear in an agreed order, and the first specific value is the identifier Information, and used to determine all sub-packets corresponding to each of the multiple UEs, to determine UEs corresponding to all sub-packets corresponding to each UE according to the agreed order of the UEs; or

The specific sub-packet header includes a logical channel identifier LCID field, and the LCID field of the specific sub-packet header is set to a first LCID, and the groups corresponding to the respective UEs appear in an agreed order in the packet header, where the identifier The information is the first LCID and the first LCID in the specific sub-packet header corresponding to all UEs is the same, and the first LCID is used to determine that all sub-packets corresponding to each of the multiple UEs correspond to UE; or

The specific sub-packet header includes a logical channel identifier LCID field, and the LCID field of the specific sub-packet header is set to a second LCID corresponding to each UE, where the specific sub-packet header does not correspond to any MAC payload, where the UE The identification information is the second LCID, the different UEs correspond to different second LCIDs, and the second LCID is different from the third LCID used to identify the MAC payload. With reference to the sixth possible implementation manner of the first aspect, or the seventh possible implementation manner, in the eighth possible implementation manner, the specific sub-packet header is all sub-packets corresponding to the MAC payload corresponding to the one UE The first sub-header or the last sub-header in .

In a second aspect, a data receiving method is provided, where the method includes:

And receiving, by the MAC packet data unit PDU, the media access control MAC payload corresponding to the multiple user equipments, where the MAC PDU includes a packet header, the MAC payload, and identifier information of each UE in the multiple UEs; The packet header includes a plurality of sub-packets, and the plurality of sub-packets are sub-packets corresponding to MAC bearers corresponding to each of the multiple UEs, and the MAC bearer corresponding to each UE includes a MAC control unit CE and/or a MAC service data unit (SDU), the identifier information is used to identify the UEs;

And parsing the MAC PDU according to the identifier information of the UEs in the MAC PDU, and determining the respective UEs corresponding to the MAC bearers.

In a first possible implementation manner of the first aspect, the determining, according to the identifier information of each UE of the MAC PDU, the parsing of the MAC PDU, determining data corresponding to each UE, includes:

If the identifier information is a value represented by a reserved bit of each of the plurality of sub-packets, determining a corresponding UE according to the value of the identifier of the reserved bit; or

Determining, according to the MAC CE for carrying the UE identifier, the UE corresponding to the UE identifier, and according to the MAC CE for carrying the UE identifier, according to the MAC CE that is used to carry the UE identifier. The location of all the MAC bearers of the UE corresponding to the UE identifier determines the all MAC payloads of the UE corresponding to the UE identifier; or

If the identification information is a specific sub-packet header, determining UEs corresponding to the plurality of specific sub-packets according to an order in which the plurality of specific sub-packets in the MAC PDU appear, and according to the plurality of specific sub-packets Determining, in a header, all MAC payloads of the UE corresponding to each of the specific sub-packets, wherein the reserved bits in the specific sub-packet are set to a first specific value, and all The first specific value in the specific sub-packet header corresponding to the UE is the same; in the packet header, the The corresponding MAC address of each UE is in the group of the UE, and the sequence of the group is agreed. The first specific value is the identifier information, and is used to determine all sub-packets corresponding to each UE of the multiple UEs. Or if the identifier information is a specific sub-packet header, determining, according to an order in which the plurality of specific sub-packets in the MAC PDU appear, the UE corresponding to the multiple specific sub-packets, and according to the multiple specific sub-packets Determining, in the header, all MAC payloads of the UE corresponding to each of the specific sub-packets, wherein the logical channel identifier LCID field in the specific sub-packet is set to the first The LCID is the same as the first LCID in the specific sub-packet header corresponding to all UEs, where the first LCID is used to determine all sub-packets corresponding to each of the multiple UEs; Each UE corresponding MAC load appears as a group of UEs, and the order of the groups is agreed; or

Determining, according to a value of an LCID field in a plurality of specific sub-packets in the MAC PDU, a UE corresponding to the multiple specific sub-packets, and according to the multiple specific sub-packets, if the identifier information is a specific sub-packet header Determining, in a location in the packet header, all MAC bearers of the UE corresponding to each of the specific sub-packets, where the value of the LCID is a second LCID, and the identifier information of the UE For the second LCID, the different UEs correspond to different second LCIDs, and the second LCID is different from the third LCID used to identify the MAC payload. In the packet header, each UE corresponds to a MAC payload to the UE. Appears for the group.

In a third aspect, a data transmitting apparatus is provided, where the apparatus includes:

a data encapsulating module, configured to encapsulate a media access control MAC payload corresponding to the multiple user equipments UE in a MAC packet data unit PDU, where the MAC PDU includes a packet header, the MAC payload, and the multiple UEs Identification information of each UE; the packet header includes a plurality of sub-packets, and the plurality of sub-packets are sub-packets corresponding to MAC bearers corresponding to each of the multiple UEs, and the MAC payload corresponding to each UE includes a MAC address. a control unit CE and/or a MAC service data unit SDU, the identification information being used to identify the respective UEs;

The sending module is configured to send, by the data receiver, the MAC PDU encapsulated by the data encapsulation module.

In a first possible implementation manner of the third aspect, the data encapsulating module is specifically configured to: And the MAC bearer corresponding to the multiple UEs is encapsulated in the MAC PDU by the respective UEs, where a location of a MAC payload corresponding to one UE of each UE is continuous, and a MAC corresponding to the one UE The position of the sub-header corresponding to the load is continuous.

With reference to the third aspect, or the first possible implementation manner of the third aspect, in a second possible implementation, the data encapsulating module is specifically configured to: reserve bits of each sub-packet header of the multiple sub-packets The value represented is the identification information, wherein the value represented by the reserved bit corresponds to the plurality of UEs.

With reference to the first possible implementation manner of the third aspect, in a third possible implementation manner, the data encapsulating module is specifically configured to use, as the identifier information, a MAC CE that is used to carry a UE identifier, where The UE identifier is the identifier of each UE, and each UE corresponds to one MAC CE for carrying the UE identifier and corresponds to one UE identifier; the MAC CE used to carry the UE identifier is in the A location in all MAC payloads of a UE indicating the location of all MAC bearers of the one UE in the MAC PDU.

With reference to the third possible implementation manner of the third aspect, in a fourth possible implementation, the data encapsulating module is specifically configured to: encapsulate the MAC CE used to carry the UE identifier in the one The first or last of all MAC payloads of the UE.

With reference to the third possible implementation manner of the third aspect, or the fourth possible implementation manner, in a fifth possible implementation manner, the data encapsulating module is specifically configured to: temporarily identify the cell radio network of the UE The C-RNTI is used as identification information of the UE.

With reference to the first possible implementation manner of the third aspect, in a sixth possible implementation, the data encapsulating module is specifically configured to: encapsulate, in the packet header, a specific sub-packet header corresponding to each UE, The specific sub-packet header is used as the identifier information of each UE.

With reference to the sixth possible implementation manner of the third aspect, in a seventh possible implementation, the data encapsulating module is specifically configured to encapsulate, in the packet header, a specific sub-portion corresponding to each UE Baotou: Setting a reserved bit in the specific sub-packet header to a first specific value, and all the sub-packets corresponding to the respective UEs are encapsulated by the respective UEs, where all the UEs correspond to the specific sub-packet headers. The first specific value is the same; in the packet header, the order of occurrence of the group corresponding to each UE is agreed, and the first specific value is the identifier information and is used to determine the multiple UEs. All the sub-packets corresponding to each UE, so that the data receiver determines the UE corresponding to all the sub-packets corresponding to each UE according to the order of the respective UEs; or

Setting the LCID field in the specific sub-packet header to the first LCID, and all the sub-packets corresponding to the respective UEs are encapsulated by the respective UEs, where the identifier information is the first LCID, and The first LCID in the specific sub-packet header corresponding to all UEs is the same, and the first LCID is used to determine all sub-packets corresponding to each of the multiple UEs, so that the data receivers are according to the UEs. The order of the agreement determines the UE corresponding to all sub-packets corresponding to each UE; or

The LCID field of the specific sub-packet header is set to a second LCID corresponding to each UE, where the specific sub-packet header does not correspond to any MAC payload, and the identifier information of the UE is the second LCID, and different UEs are different. a second LCID, and the second LCID is different from a third LCID for identifying the MAC payload.

With reference to the sixth possible implementation manner of the third aspect, or the seventh possible implementation manner, in an eighth possible implementation, the data encapsulating module is specifically configured to encapsulate the specific sub-packet header into the The first sub-packet or the last sub-packet header of all sub-packets corresponding to each UE.

In a fourth aspect, a data receiving apparatus is provided, where the apparatus includes:

a receiving module, configured to receive a MAC packet data unit PDU encapsulated with a media access control MAC payload corresponding to multiple user equipment UEs, where the MAC PDU includes a packet header, the MAC payload, and each of the multiple UEs The packet header includes a plurality of sub-packets, where the plurality of sub-packets are sub-packets corresponding to MAC bearers corresponding to each of the multiple UEs, and the MAC bearer corresponding to each UE includes MAC control. a unit CE and/or a MAC service data unit SDU, the identification information being used to identify the respective UE; And a parsing module, configured to determine, according to the identifier information of each UE in the MAC PDU received by the receiving module, and the packet header, the MAC PDU to determine each UE corresponding to each of the MAC bearers.

In a first possible implementation manner of the fourth aspect, the parsing module is configured to: parse the MAC PDU to determine the respective UEs corresponding to each of the MAC payloads as follows:

If the identification information is a specific sub-packet header, determining UEs corresponding to the plurality of specific sub-packets according to an order in which the plurality of specific sub-packets in the MAC PDU appear, and according to the plurality of specific sub-packets Determining, in a header, all MAC payloads of the UE corresponding to each of the specific sub-packets, wherein the reserved bits in the specific sub-packet are set to a first specific value, and all The first specific value in the specific sub-packet header corresponding to the UE is the same; in the packet header, the corresponding MAC bearer of each UE appears as a group, and the order of the group is agreed, the first specific The value is the identifier information, and is used to determine all sub-packets corresponding to each of the multiple UEs; or if the identifier information is a specific sub-packet header, according to multiple specific sub-packets in the MAC PDU Determining a UE corresponding to the plurality of specific sub-packets, and determining, according to a location of the plurality of specific sub-packets in the header, the UE corresponding to each of the specific sub-packets Place There is a MAC payload, where the logical channel identifier LCID field in the specific sub-packet header is set to the first LCID and the first LCID in the specific sub-packet header corresponding to all UEs is the same, and the first LCID is used by the first LCID. Determining, in the packet header, the MAC bearer of each UE is a group of the UE, and the order of the group is agreed; or Determining, according to a value of an LCID field in a plurality of specific sub-packets in the MAC PDU, a UE corresponding to the multiple specific sub-packets, and according to the multiple specific sub-packets, if the identifier information is a specific sub-packet header Determining, in a location in the packet header, all MAC bearers of the UE corresponding to each of the specific sub-packets, where the value of the LCID is a second LCID, and the identifier information of the UE For the second LCID, different UEs correspond to different second LCIDs, and the second LCID is different from a third LCID for identifying the MAC payload, where each UE corresponds to a MAC payload to the UE. Appears for the group.

In a fifth aspect, a data transmitting apparatus is provided, where the apparatus includes:

a baseband processor, configured to encapsulate a media access control MAC payload corresponding to the multiple user equipments UE in a MAC packet data unit PDU, where the MAC PDU includes a packet header, the MAC payload, and the multiple UEs Identification information of each UE; the packet header includes a plurality of sub-packets, and the plurality of sub-packets are sub-packets corresponding to MAC bearers corresponding to each of the multiple UEs, and the MAC payload corresponding to each UE includes a MAC address. a control unit CE and/or a MAC service data unit SDU, the identification information being used to identify the respective UEs;

And a transmitter, configured to send the MAC PDU encapsulated by the baseband processor to a data receiver. In a first possible implementation manner of the fifth aspect, the baseband processor is specifically configured to: where a location of a MAC payload corresponding to one UE in each UE is consecutive, and a MAC load corresponding to the one UE The position of the corresponding sub-header is continuous.

With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, in a second possible implementation, the baseband processor is specifically configured to: reserve bits of each sub-packet header of the multiple sub-packets The value represented is the identification information, wherein the value represented by the reserved bit corresponds to the plurality of UEs.

With reference to the first possible implementation manner of the fifth aspect, in a third possible implementation, the baseband processor is specifically configured to use, as the identifier information, a MAC CE that is used to carry a UE identifier, where The UE identifier is an identifier of each UE, and each UE corresponds to one a MAC CE for carrying the UE identifier and corresponding to one UE identifier; the location of the MAC CE for carrying the UE identifier in all MAC loads of the one UE, indicating all MAC loads of the one UE The location in the MAC PDU.

With the third possible implementation of the fifth aspect, in a fourth possible implementation, the baseband processor is specifically configured to: encapsulate the MAC CE that is used to carry the UE identifier in the one The first or last of all MAC payloads of the UE.

With reference to the third possible implementation manner of the fifth aspect, or the fourth possible implementation manner, in a fifth possible implementation, the baseband processor is specifically configured to: temporarily identify a cell radio network of the UE The C-RNTI is used as identification information of the UE.

With reference to the first possible implementation manner of the fifth aspect, in a sixth possible implementation, the baseband processor is specifically configured to: encapsulate, in the packet header, a specific sub-packet header corresponding to each UE, The specific sub-packet header is used as the identifier information of each UE.

With reference to the sixth possible implementation manner of the fifth aspect, in a seventh possible implementation, the baseband processor is specifically configured to encapsulate, in the packet header, a specific sub-portion corresponding to each UE Baotou:

Setting a reserved bit in the specific sub-packet header to a first specific value, and all the sub-packets corresponding to the respective UEs are encapsulated by the respective UEs, where all the UEs correspond to the specific sub-packet headers. The first specific value is the same; in the packet header, the order of occurrence of the group corresponding to each UE is agreed, and the first specific value is the identifier information and is used to determine the multiple UEs. All the sub-packets corresponding to each UE, so that the data receiver determines the UE corresponding to all the sub-packets corresponding to each UE according to the order of the respective UEs; or

Setting the LCID field in the specific sub-packet header to the first LCID, and all the sub-packets corresponding to the respective UEs are encapsulated by the respective UEs, where the identifier information is the first LCID, and The first LCID in the specific sub-packet header corresponding to all UEs is the same, and the first LCID is used to determine all sub-packets corresponding to each of the multiple UEs, so that the data receivers are according to the UEs. The order of the agreement determines the UE corresponding to all sub-packets corresponding to each UE; or The LCID field of the specific sub-packet header is set to a second LCID corresponding to each UE, where the specific sub-packet header does not correspond to any MAC payload, and the identifier information of the UE is the second LCID, and different UEs are different. a second LCID, and the second LCID is different from a third LCID for identifying the MAC payload.

With reference to the sixth possible implementation manner of the fifth aspect, or the seventh possible implementation manner, in the eighth possible implementation, the data encapsulating module is specifically configured to encapsulate the specific sub-packet header into the The first sub-packet or the last sub-packet header of all sub-packets corresponding to each UE.

According to a sixth aspect, a data receiving apparatus is provided, where the apparatus includes:

a receiver, configured to receive a MAC packet data unit PDU encapsulated with a medium access control MAC payload corresponding to multiple user equipment UEs, where the MAC PDU includes a packet header, the MAC payload, and each of the multiple UEs The packet header includes a plurality of sub-packets, where the plurality of sub-packets are sub-packets corresponding to MAC bearers corresponding to each of the multiple UEs, and the MAC bearer corresponding to each UE includes MAC control. a unit CE and/or a MAC service data unit SDU, the identification information being used to identify the respective UEs;

a baseband processor, configured to: according to each of the MAC PDUs received by the receiving module

The identification information of the UE and the packet header are parsed, and the MAC PDU is parsed to determine the respective UEs corresponding to the respective MAC payloads.

In a first possible implementation manner of the sixth aspect, the baseband processor is specifically configured to: determine, by the MAC PDU, the respective UEs corresponding to each of the MAC bearers by:

Determining, according to the MAC CE for carrying the UE identifier, the UE corresponding to the UE identifier, and according to the MAC CE for carrying the UE identifier, according to the MAC CE that is used to carry the UE identifier. The location of all the MAC bearers of the UE corresponding to the UE identifier determines the all MAC payloads of the UE corresponding to the UE identifier; or If the identification information is a specific sub-packet header, determining UEs corresponding to the plurality of specific sub-packets according to an order in which the plurality of specific sub-packets in the MAC PDU appear, and according to the plurality of specific sub-packets Determining, in a header, all MAC payloads of the UE corresponding to each of the specific sub-packets, wherein the reserved bits in the specific sub-packet are set to a first specific value, and all The first specific value in the specific sub-packet header corresponding to the UE is the same; in the packet header, the corresponding MAC bearer of each UE appears as a group, and the order of the group is agreed, the first specific The value is the identifier information, and is used to determine all sub-packets corresponding to each of the multiple UEs; or if the identifier information is a specific sub-packet header, according to multiple specific sub-packets in the MAC PDU Determining a UE corresponding to the plurality of specific sub-packets, and determining, according to a location of the plurality of specific sub-packets in the header, the UE corresponding to each of the specific sub-packets of There is a MAC payload, where the logical channel identifier LCID field in the specific sub-packet header is set to the first LCID and the first LCID in the specific sub-packet header corresponding to all UEs is the same, and the first LCID is used by the first LCID. Determining, in the packet header, the MAC bearer of each UE is a group of the UE, and the order of the group is agreed; or

If the identifier information is a specific sub-packet header, determining, according to a value of an LCID field in a plurality of specific sub-packets in the MAC PDU, a UE corresponding to the multiple specific sub-packets, and according to the multiple specific sub-packets Determining, in a location in the packet header, all MAC bearers of the UE corresponding to each of the specific sub-packets, wherein the value of the LCID is a second LCID, and the identifier information of the UE For the second LCID, different UEs correspond to different second LCIDs, and the second LCID is different from a third LCID for identifying the MAC payload, where each UE corresponds to a MAC payload to the UE. Appears for the group.

According to a seventh aspect, a data transmission system is provided, including the data transmitting apparatus in any one of the third aspect or the third aspect, and any one of the fourth aspect or the fourth aspect The data receiving device in the implementation manner. The eighth aspect provides a data transmission system, including the data transmitting apparatus in any one of the fifth aspect or the fifth aspect, and any one of the sixth aspect or the sixth aspect The data receiving device in the implementation manner.

In a ninth aspect, there is provided a baseband processor for performing the steps of the method of any one of the first aspect or the first aspect of the first aspect.

In a tenth aspect, there is provided a baseband processor for use in the steps of the method of the second aspect or the first possible implementation of the second aspect.

In the above solution, the MAC PDU is transmitted in the multi-user cooperative communication by transmitting the MAC PDU encapsulated with the data corresponding to the multiple UEs and including the identification information of each UE in the MAC PDU. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the description of the embodiments will be briefly described below. Obviously, the drawings in the following description are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

1 is a structural diagram of a MAC PDU according to an embodiment of the present invention;

2 is a structural diagram of a MAC PDU according to another embodiment of the present invention;

3 is a structural diagram of a MAC PDU according to another embodiment of the present invention;

4 is a structural diagram of a MAC PDU according to another embodiment of the present invention;

FIG. 5 is a flowchart of a data sending method according to an embodiment of the present invention; FIG.

6 is a flowchart of a data receiving method according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a data transmitting apparatus according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram of a data receiving apparatus according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of a data transmitting apparatus according to another embodiment of the present invention; FIG.

FIG. 10 is a schematic structural diagram of a data receiving apparatus according to another embodiment of the present invention; FIG.

FIG. 11 is a schematic structural diagram of a baseband processor according to an embodiment of the present invention; FIG. FIG. 12 is a schematic structural diagram of a baseband processor according to another embodiment of the present invention. detailed description

In the prior art MAC PDU, the different channel identifiers of the same user equipment (UE: user equipment) are distinguished, so that the receiving end does not confuse data of different logical channels, where the receiving end of the uplink data is a base station. The receiving end of the downlink data is the UE.

In multi-user cooperative communication, whether it is uplink data or downlink data, there may be a case where data of a plurality of UEs is included in one MAC PDU, and data of one UE may be data of multiple logical channels of the UE. The data in the MAC PDU includes a service data unit (SDU) and a MAC (control element). If the MAC PDUs in the prior art are still used in the multi-user cooperative communication, different UEs need to use completely different LCID intervals, so that the LCID can be used to identify which logical channel of the UE the data in the MAC PDU belongs to.

However, the LCID interval of the existing MAC SDU is limited, from 0 to 10. If the UE is distinguished within this limited interval, the number of logical channels supported by each UE (ie, the number of radio bearers) is greatly reduced. At the same time, the number of UEs that can cooperate in multi-user cooperative communication also increases the limit.

On the other hand, the control signaling MAC CE in the header of the MAC PDU in the prior art is identified by a fixed LCID. If different UEs have different LCID intervals, the MAC CE fixed LCID needs to be changed, which is related to the prior art. Poor compatibility.

Therefore, the prior art does not provide a scheme in which one MAC PDU contains data of a plurality of UEs. The embodiments of the present invention provide a data transmission method and apparatus, so as to implement how to transmit a MAC PDU including data of multiple UEs, so as to be able to distinguish data of different UEs in one MAC PDU including data of multiple UEs.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. Based on the present invention All other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present invention.

It should be noted that the embodiments of the present invention and the features of the embodiments may be arbitrarily combined with each other without conflict.

An embodiment of the present invention provides a MAC PDU that can be applied to an LTE system and various evolution systems based on the LTE system, for example, a long term evolution-advanced (LTE-A) system.

a MAC PDU includes: a packet header, a MAC payload corresponding to the multiple UEs, and identifier information of each of the plurality of UEs, where the packet header includes a plurality of sub-packets, and the plurality of sub-packets are each of the plurality of UEs The MAC bearers corresponding to the UEs respectively correspond to the sub-packets, and the MAC bearers corresponding to the UEs include a MAC CE and/or a MAC SDU, and the identifier information is used to identify the UEs.

In this embodiment, by including the identifier information of the UE in the MAC PDU, the UE corresponding to the MAC payload of the MAC PDU can be distinguished.

Specifically, in the MAC PDU, the packet header is located before a MAC payload corresponding to the multiple UEs, and each sub-packet header in the packet header and the MAC CE and/or MAC SDU included in the MAC PDU are correspond. That is, there is a MAC CE in the MAC payload in the MAC PDU, and there is a sub-packet header corresponding to the MAC CE in the header.

One of the UEs may have only a MAC CE, or only a MAC SDU, or both a MAC CE and a MAC SDU. This is not the case.

The MAC PDU provided in this embodiment may have multiple implementation manners.

The MAC PDU provided by the first embodiment is as shown in FIG. 1.

In Figure 1, the MAC PDU includes a MAC header, a MAC payload portion, and an optional padding. The MAC header is located at the head of a MAC PDU, followed by the MAC payload portion, and the optional padding is located at the end of the MAC PDU. The MAC payload part is all MAC loads corresponding to the respective UEs, and the MAC payload includes a MAC CE and a MAC SDU. Figure 1 has two MAC CEs, and the other 'J is MAC CE1 and MAC CE2, and there are multiple MAC SDUs. All MAC CEs in the MAC PDU are located at the head of the MAC payload. a sub-packet header, where the plurality of sub-packets respectively correspond to respective MAC CEs and MAC SDUs in the MAC payload, and the plurality of sub-packets further include a sub-packet header corresponding to the padding, of course, if the MAC PDU is in the MAC payload MAC CE and MAC SDU-corresponding, and the location of the sub-packet header corresponding to one MAC SDU in the MAC header corresponds to the location of the one MAC SDU in the MAC payload, and the MAC CE is in the MAC payload. The location in the location also corresponds to the location of the sub-packet header corresponding to the MAC CE in the MAC header. A sub-packet header includes 2 reserved bits (R) fields, a 1-bit extension (E) field, that is, an E field, and a 5-bit LCID field. The E field is used to indicate whether there is a sub-packet header after the sub-packet header where the E field is located. In addition, the sub-packet header of the MAC SDU also includes a lbit format (format, F) field and a length (length, L) field. The length of the sub-packet header corresponding to the MAC CE is fixed, and therefore, there is no L field. The L field of the sub-packet header corresponding to the MAC SDU may be 7 bits or 15 bits, and the F field is used to indicate the length of the L field.

It can be seen that whether it is a MAC CE or a MAC SDU, there are two reserved bits in the corresponding sub-packet header, that is, the R domain. In this implementation manner, the identifier information is represented by reserved bits in each sub-packet header in a packet header (ie, a MAC packet header) of the MAC PDU, thereby identifying different UEs. Therefore, the reserved bits of each sub-packet header in the header of the MAC PDU can collectively identify 4 different UEs.

The identifier information corresponding to each UE may be allocated by the base station to the UE at the beginning of the establishment of the multi-user cooperative communication, or the base station negotiates the identification information corresponding to each UE with each UE. For example, the two reserved bits include four combinations, namely: 00, 01, 10, 11 , which correspond to 4 UEs respectively.

By including the identifier information of the UE in each sub-packet header of the packet header of the MAC PDU, it can indicate which UE the MAC CE or MAC SDU corresponding to the sub-packet header and the sub-packet header belongs to, so that the MAC address corresponding to each MAC bearer in the MAC PDU can be distinguished. UE.

In this implementation manner, the order of the sub-packets of each UE is not limited, and may be any order, for example, may be the same sequence as the prior art, that is, the sub-headers of the MAC CEs of all UEs are first, then all UEs. Sub-header of the MAC SDU; it can also be all MAC CE and/or MAC SDU of a UE The sub-header, then the sub-header of all MAC CEs and/or MAC SDUs of another UE, and so on.

Further, the identifier information of the UE in the sub-packet header is used in combination with the LCID in the sub-packet header to distinguish which logical channel of which UE the MAC CE or the MAC SDU corresponding to the sub-packet header belongs to. Therefore, in this embodiment, different UEs can use the same LCID. Therefore, this embodiment does not need to change the fixed LCID of the MAC CE, and the compatibility with the prior art is good. It should be noted that the MAC PDU provided by the embodiment of the present invention can achieve this effect, and therefore, details are not described herein. The MAC PDU provided by the second embodiment is shown in FIG. 2.

Different from FIG. 1, in FIG. 2, the MAC load is divided into a plurality of groups, and all the loads of one UE are one group, and the number of groups is equal to the number of UEs. It should be noted that the MAC load described herein is divided into multiple groups, which are only logical divisions, and there is no actual operation of dividing the groups. The MAC CE and the MAC SDU in the MAC PDU appear as a group of UEs, where each UE has a MAC CE for carrying the UE ID. In FIG. 2, among the first group of MAC bearers corresponding to the first UE, the MAC CE with the UE ID is located at the head of the group of MAC bearers, followed by the other MAC CEs of the UE, and in FIG. 2, except for the bearer UE ID. In addition to the MAC CE, the UE also has a MAC CE, all MAC CEs of the UE are followed by all MAC SDUs of the UE, all MAC payloads of the first UE are followed by all MAC payloads of the second UE, and so on.

In this embodiment, all sub-packets corresponding to one UE are encapsulated in consecutive positions of the packet header, and all MAC payloads corresponding to the one UE are encapsulated in consecutive positions after the packet header. That is to say, the sub-packets in the header of the MAC PDU appear as a group of UEs, that is, all sub-packets of one UE are followed by all sub-packets of another UE. Therefore, the MAC payload corresponding to the sub-packet header also appears as a UE. . All the MAC bearers of a UE include a MAC CE dedicated to carrying the UE identifier, so that the data receiver can determine the UE to which all MAC loads belong according to the MAC CE dedicated to the UE identifier. In this embodiment, the identifier information of the UE is the MAC CE dedicated to carrying the UE identifier. Further, according to the MAC CE dedicated to carrying the UE identity, the data receiver is also able to determine the location of all MAC payloads belonging to one UE. Optionally, the MAC CE dedicated to carrying the UE identifier may be located in the first or last of all MAC loads of the UE, that is, the first MAC payload or the last MAC in the group of MAC bearers corresponding to the UE. Load. Of course, embodiments of the invention are not limited to the first or last. For example, the MAC CE dedicated to carrying the UE identifier may also be located at other locations in all MAC payloads of the UE, for example, may be a data receiver and a data sender agreed or preset location, such as in a group of MAC payloads. The third MAC payload, therefore, the present embodiment does not limit the location of the MAC CE used to indicate the identity information of the UE, as long as all the MACs corresponding to the UE can be determined according to the location of the MAC CE used to indicate the identity information of the UE. The position of the load can be.

Further, the identifier information of the UE in the sub-packet header is used in combination with the LCID in the sub-packet header to distinguish which logical channel of which UE the MAC CE or the MAC SDU corresponding to the sub-packet header belongs to. Therefore, in this embodiment, different UEs can use the same LCID. Therefore, this embodiment does not need to change the fixed LCID of the MAC CE, and the compatibility with the prior art is good.

In an example, the MAC CE dedicated to the bearer of the UE identifier may be a MAC CE, where the MAC CE includes the identifier of the UE, and the sub-packet header corresponding to the MAC CE is identified by an unoccupied LCID, that is, The MAC CE dedicated to the bearer of the UE is assigned a new LCID, and the LCID identifies the identity information used by the MAC CE to transmit the UE. In this case, the identity information of the UE may be a UE identity (UE identify). The UE ID may be allocated by the base station to the user equipment, and the UE can be uniquely determined according to the UE ID. Of course, the UE ID can also use the identity of the existing UE.

In another example, the identifier of the UE may also use the cell-radio network temporary identifier (C-RNTI) of the UE in the prior art as the identifier information of the UE in the embodiment of the present invention. Correspondingly, the MAC CE used to carry the identity information of the UE is used to transmit the MAC CE of the C-RNTI.

In the prior art, when a UE transitions from an synchronized status to a synchronized status, or when the UE switches to a target cell, it carries a C-containing message on message 3 (message 3). MAC CE of RNTI. In order not to affect C-RNTI in the prior art For a function, the use of the C-RNTI may be restricted in a plurality of manners, so as to avoid the MAC CE of the C-RNTI serving as the identification information of the UE in the MAC PDU including the MAC payload corresponding to multiple UEs in the embodiment of the present invention. Confused with the MAC CE containing C-RNTI used in the prior art. For example, it may be specified that when the UE needs to carry the C-RNTI according to the traditional procedure (for example, when the gait is restored to the connected state to send the message 3, or when the target cell is switched), one MAC PDU does not include other UEs. The MAC SDU or the MAC CE, that is, only sends the MAC CE of the UE and/or the MAC SDU of the UE; for example, when the UE needs to carry the C-RNTI according to the traditional procedure (for example, recovering from the lost gait state to the connected state, sending a message) 3, when switching to the target cell), may carry the MAC SDU or MAC CE of other UEs, but the MAC CE of the UE using the C-RNTI according to the conventional procedure and the possible MAC SDUs are all in the entire MAC PDU. The front or the end, and so on. The embodiment of the present invention does not limit how to distinguish the usage scenario of the C-RNTI in the embodiment and the normal usage scenario thereof. Any method that can distinguish between the usage scenario of the C-RNTI of the embodiment of the present invention and the usage scenario of the C-RNTI in the prior art can be used in the embodiment of the present invention.

In a MAC PDU in the prior art, all the MAC CEs are placed before all the MAC SDUs, and the UEs are grouped, so that the MAC CE corresponding to one UE appears after the MAC SDU corresponding to another UE, breaking the existing one. This constraint in technology.

In this embodiment, by adding the MAC CE dedicated to carrying the UE identifier in the MAC PDU, and all MAC CEs and MAC SDUs of the same UE and their corresponding sub-packets appear in the UE group, the MAC in the MAC PDU can be distinguished. The UE corresponding to the CE and the MAC SDU.

The MAC PDU provided by the third embodiment is shown in FIG.

Different from FIG. 2, the MAC CE dedicated to carrying the UE identifier is not included in FIG. 3, but the packet header includes a plurality of specific sub-packets that are identification information of the UE. Wherein, "specific" means that the function in the packet header is specific, that is, the specific sub-packet header is used as the identification information of the UE, and its structure may be the same as that of the MAC CE, that is, the specific sub-packet header includes 2 reserved bits, 1 bit E Field and 5-bit LCID field. Of course, other specific structures may also be used, and the present embodiment is not limited to the specific structure. The same as the second embodiment, the sub-packet header in the packet header of the MAC PDU also appears in the UE as a group. Correspondingly, the MAC CE and the MAC SDU corresponding to the sub-packet header also appear as a UE. Different from the second embodiment, the specific sub-packet header is used as the identification information of the UE in the embodiment, that is, the specific sub-packet header is used to determine the location of all sub-packets corresponding to the UE indicated by the specific sub-packet header. Therefore, the present embodiment does not need to add a MAC CE dedicated to indicating the identity information of the UE.

In this case, the base station and the UE can pre-arrange the order of the MAC loads of the respective UEs in the MAC PDU. Therefore, the receiver can determine the location of all the sub-packets of a certain UE according to the specific sub-packet header, and further determine the location of the MAC payload corresponding to the one UE. In combination with the pre-agreed order, the UE corresponding to the MAC CE or MAC SDU can be determined.

The specific sub-packet header may be set to the first specific value by using the reserved bit in the sub-packet header to indicate that the MAC CE or the MAC SDU corresponding to the sub-packet header is the start of the MAC payload corresponding to one UE and/or the MAC SDU. s position. In this case, the LCID in the specific sub-packet header can also be used. Therefore, the specific sub-packet header can correspond to one MAC CE or MAC SDU. For example, the reserved bits in the sub-packet header are all "00" by default. In this embodiment, the reserved bit of the sub-packet header may be set to "11", "01" or "10" to indicate that the MAC CE or MAC SDU corresponding to the sub-packet header is the start or end of the MAC load corresponding to one UE. Certainly, the embodiment of the present invention is also not limited to the location where the specific sub-packet header corresponds to the start or end of the MAC payload corresponding to one UE, or may be one of all MAC CEs and MAC SDUs of the UE agreed by the data receiver and the data sender. Location, as long as it can determine the location of all MAC CE and MAC SDU corresponding to one UE. If a UE does not send any MAC CE or MAC SDU, the specific sub-packet of the next UE and the sub-packets corresponding to all MAC CEs and MAC SDUs may be sent after the specific sub-packet header of the UE. Alternatively, if a UE does not have any MAC CE or MAC SDU transmission, another sub-packet header containing another second specific value may be used to indicate that the UE does not have a MAC CE or MAC SDU to be transmitted. The second specific value is different from the first specific value. The MAC CE or MAC SDU corresponding to the sub-packet header is the start or end or other location of the MAC payload corresponding to the UE, so that all MAC CEs and/or MAC SDUs corresponding to the UE can be determined according to the sub-packet including the specific LCID. s position. The specific LCID may be a value of any one of the unoccupied LCIDs, and the specific sub-packet header does not correspond to any MAC CE or MAC SDU in the MAC PDU, and is only used to determine the location of the MAC payload corresponding to one UE. In this case, if a certain UE has a MAC CE or a MAC SDU to be transmitted, the specific sub-packet header is placed at a corresponding position in the group of the sub-packet header of the UE. If a UE does not send any MAC CE or MAC SDU, the specific sub-packet of the next UE and the sub-packets corresponding to all MAC CEs and MAC SDUs may be sent after the specific sub-packet header of the UE. Or, if a UE does not have any MAC CE or MAC SDU transmission, another sub-packet containing another specific LCID may be used to indicate that the UE does not have a MAC CE or a MAC SDU to be sent. In this embodiment, all the UEs are all UEs in one UE group, and the multiple UEs belong to the UE group.

Similarly, in this embodiment, a sub-packet indicating the identification information of the UE is added to the MAC PDU, and all MAC CEs and MAC SDUs of the same UE and their corresponding sub-packets are presented in groups of UEs, so that multiple The MAC payload corresponding to different UEs in one MAC PDU of the MAC payload corresponding to the UE.

The MAC PDU provided by the fourth embodiment is shown in FIG.

Different from FIG. 3, the identification information of each UE is carried in the LCID field in the specific sub-packet header in FIG.

In the same manner as the third embodiment, the sub-packets in the header of the MAC PDU also appear as a group in the UE. Correspondingly, the MAC CE and MAC SDU corresponding to the sub-packet header also appear as a UE. The difference is that the embodiment also adds a sub-packet header that does not correspond to any MAC CE and MAC SDU, and is used to indicate the location of all sub-packets corresponding to one UE in the header of the MAC PDU. Therefore, the present embodiment also does not need to increase the MAC CE for indicating the identity information of the UE. In addition, the identifier information of the UE in this embodiment is an LCID allocated to each UE, where the LCID corresponding to different UEs is not Similarly, the LCID that is the identification information of the UE may be an LCID that is not occupied in the prior art. The LCID in the sub-header is the LCID assigned to each UE. Therefore, in this embodiment, the sub-packet header for indicating the location of the sub-packet header corresponding to one UE in the header of the MAC PDU can also indicate which UE the sub-packet header corresponds to.

Similarly, in this embodiment, the sub-packet header used to indicate the UE may be any agreed location in the sub-packet header group corresponding to the UE, and may be selected as the first sub-packet header or the last sub-group of the sub-packet header. Baotou.

In addition, since the sub-packet header of the present embodiment includes the identification information of the UE, when a certain UE does not have a MAC payload to transmit, the MAC PDU may not include the sub-packet header of the UE.

In this embodiment, by adding a MAC CE indicating the identity information of the UE to the MAC PDU and adding the same

All the MAC CEs and the MAC SDUs of the UE and their corresponding sub-packets are grouped by the UE, so that the UEs corresponding to the MAC CE and the MAC SDU in the MAC PDU can be distinguished.

Based on the MAC PDU provided by the foregoing embodiment, another embodiment of the present invention provides a data sending method, where the MAC PDU can be applied to an LTE system and various evolved systems based on the LTE system. As shown in Figure 5, the method includes the following steps.

Step 510, the MAC payload corresponding to the multiple UEs is encapsulated in a MAC PDU, where the MAC payload includes a MAC CE and/or a MAC SDU, where the MAC PDU includes a packet header, a MAC payload corresponding to the multiple UEs, and The identifier information of each of the plurality of UEs, where the packet header includes a plurality of sub-packets, and the plurality of sub-packets are sub-packets corresponding to MAC bearers corresponding to each of the multiple UEs, where each The MAC bearer corresponding to the UE includes a MAC CE and/or a MAC SDU, and the identifier information is used to indicate the respective UEs.

It should be noted that, in the embodiment of the present invention, the data is a MAC payload.

The MAC PDUs formed in this step can be referred to the various embodiments described in the foregoing embodiments. For brevity, details are not described herein.

Step 520, sending the MAC PDIL In this embodiment, by transmitting a MAC PDU encapsulated with data corresponding to multiple UEs, and including the identification information of each UE in the MAC PDU, the MAC PDU is transmitted in the multi-user cooperative communication. Moreover, the embodiment of the present invention does not need to change the fixed LCID of the MAC CE, and the compatibility with the prior art is good. Based on the MAC PDU provided by the foregoing embodiment, another embodiment of the present invention provides a data receiving method, where the MAC PDU can be applied to an LTE system. As shown in FIG. 6, the method includes the following steps.

Step 610: Receive a MAC PDU that encapsulates a MAC payload corresponding to multiple UEs, where the MAC payload includes a MAC CE and/or a MAC SDU, where the MAC PDU includes a packet header, a MAC payload corresponding to the multiple UEs, and The identifier information of each of the plurality of UEs, where the packet header includes a plurality of sub-packets, and the plurality of sub-packets are sub-packets corresponding to MAC bearers corresponding to each of the multiple UEs, where each The MAC bearer corresponding to the UE includes a MAC CE and/or a MAC SDU, and the identifier information is used to indicate the respective UEs.

For the structure of the MAC PDU in this step, reference may be made to the various embodiments described in the foregoing embodiments. For brevity, details are not described herein again.

Step 620: Analyze the MAC PDU according to the identifier information of the UEs of the MAC PDU and the packet header, and determine a MAC payload corresponding to each UE.

In this step, the parsing the MAC PDU determines that the MAC payload corresponding to each UE is parsed according to different identification information in the foregoing embodiment.

For example, for the first embodiment described above, the UE corresponding to the MAC payload is determined according to the value of the reserved bit in the sub-packet header corresponding to the MAC payload.

For the foregoing second implementation manner, determining, according to the MAC CE used to indicate the identity information of the UE, the UE indicated by the MAC CE, and determining, according to the agreed location of the MAC CE indicating the identity information of the UE, all MAC loads of the UE s position.

For the third embodiment, the UE corresponding to the sub-packet header is determined according to the specific sub-packet header and the order in which the sub-packet header appears, and the location of all MAC payloads of the UE is determined according to the agreed location of the specific sub-packet header. For the fourth implementation manner described above, the UE corresponding to the sub-packet header is determined according to the LCID of the sub-packet header, and the location of all MAC payloads of the UE is determined according to the agreed location of the specific sub-packet header.

In this embodiment, by receiving a MAC PDU encapsulated with data corresponding to multiple UEs, and determining data corresponding to each UE according to the identification information of each UE included in the MAC PDU, the MAC PDIL is transmitted in the multi-user cooperative communication. The embodiment of the present invention does not need to change the fixed LCID of the MAC CE, and the compatibility with the prior art is good.

Based on the MAC PDU provided by the foregoing embodiment, another embodiment of the present invention provides a data transmitting apparatus 70, where the apparatus 70 is configured to perform the data sending method provided by the foregoing embodiment, and the embodiment only performs the structure of the apparatus. Briefly stated, the specific principles can be combined as described in the method embodiments. As shown in FIG. 7, the apparatus includes a baseband processor 701 and a transmitter 702.

The baseband processor 701 is configured to encapsulate a MAC payload corresponding to multiple UEs in a MAC PDU, where the MAC PDU includes a packet header, the MAC payload, and identifier information of each UE in the multiple UEs; The packet header includes a plurality of sub-packets, and the plurality of sub-packets are sub-packets corresponding to MAC bearers corresponding to each of the multiple UEs, and the MAC bearer corresponding to each UE includes a MAC CE and/or a MAC SDU. The identifier information is used to identify the UEs.

For the MAC PDUs encapsulated by the baseband processor 701, reference may be made to the various embodiments described in the foregoing embodiments of FIG. 1 to FIG. 4, and details are not described herein again for brevity.

The transmitter 702 is configured to send the MAC PDU encapsulated by the baseband processor 701 to a data receiver.

The data sending apparatus 70 provided in this embodiment may be embedded or may be a base station, or may be embedded or may be a UE. Moreover, the baseband processor 701 may also be other hardware modules having a baseband processing function, and is not limited to a baseband processor. For example, it can be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component. The general purpose processor may be a microprocessor or the processor or any conventional processor, decoder or the like. In addition, the data transmitting apparatus 70 of the embodiment of the present invention may further include a radio frequency processor, a receiver, a power controller, a processor, a memory, and the like. The memory can include read only memory and random access memory and provides instructions and data to the processor. A portion of the memory may also include non-volatile row random access memory. In a particular application, device 70 may also include a carrier that houses transmitter 702 and a receiver to allow data transmission and reception between device 70 and a remote location. Transmitter 702 and receiver can be coupled to the antenna. The various components of device 70 are coupled together by a bus system, which in addition to the data bus includes a power bus, a control bus, and a status signal bus.

In this embodiment, by transmitting a MAC PDU encapsulated with data corresponding to multiple UEs, and including the identification information of each UE in the MAC PDU, the MAC PDU is transmitted in the multi-user cooperative communication. Moreover, the embodiment of the present invention does not need to change the fixed LCID of the MAC CE, and the compatibility with the prior art is good. Based on the MAC PDU provided by the foregoing embodiment, another embodiment of the present invention provides a data receiving apparatus 80, where the apparatus 80 is configured to perform the data receiving method provided by the foregoing embodiment, and only the structure of the apparatus 80 is used in this embodiment. For a brief description, the specific principles can be combined with reference to the method embodiments. As shown in FIG. 8, the apparatus includes a receiver 801 and a baseband processor 802.

The receiver 801 is configured to receive a MAC PDU that encapsulates a MAC payload corresponding to multiple UEs, where the MAC PDU includes a packet header, the MAC payload, and identifier information of each UE in the multiple UEs. The packet header includes a plurality of sub-packets, and the plurality of sub-packets are sub-packets corresponding to MAC bearers corresponding to each of the multiple UEs, and the MAC bearer corresponding to each UE includes a MAC CE and/or a MAC SDU. The identification information is used to identify the respective UEs.

The baseband processor 802 is configured to determine, according to the identifier information of each UE in the MAC PDU received by the receiving module 801, and the packet header, to determine the MAC PDU corresponding to each MAC bearer. Each of the described UEs. In this step, the baseband processor 802 is specifically configured to parse the MAC PDU according to different identification information in the foregoing embodiment to determine data corresponding to each UE. For details, refer to the description in the foregoing method embodiments, and details are not described herein again.

The data receiving apparatus 80 provided in this embodiment may be embedded or may be a base station of the LTE system, or may be embedded or may be a UE. Moreover, the baseband processor 802 may also be other hardware modules having baseband processing functions, not limited to baseband processors.

In addition, the data transmitting apparatus 80 of the embodiment of the present invention may further include a radio frequency processor, a transmitter, a power controller, a processor, a memory, and the like. Reference is made in detail to the description in the above data receiving apparatus 70.

Another embodiment of the present invention provides a data transmission system, which includes the data transmitting apparatus 70 and the data receiving apparatus 80 in the foregoing embodiments. The specific principles may be referred to in the method embodiments, and are not described herein again. Another embodiment of the present invention provides a data transmitting apparatus 90. The apparatus 90 is configured to perform the data receiving method provided by the foregoing embodiment. This embodiment only briefly describes the structure of the apparatus 90. The method examples are described. As shown in FIG. 9, the device 90 includes a data encapsulation module 901 and a transmission module 902.

The data encapsulating module 901 is configured to encapsulate, in a MAC packet data unit PDU, a media access control MAC payload corresponding to the multiple user equipments, where the MAC PDU includes a packet header, the MAC payload, and the multiple UEs. And the identifier of each of the UEs; the packet header includes a plurality of sub-packets, where the plurality of sub-packets are sub-packets respectively corresponding to MAC addresses corresponding to each of the multiple UEs, and the MAC payload corresponding to each UE includes a MAC control unit CE and/or a MAC service data unit SDU, the identification information being used to identify the respective UEs; The sending module 902 is configured to send, by the data receiver, the MAC PDU encapsulated by the data encapsulating module 901.

Optionally, the data encapsulating module 901 is specifically configured to: encapsulate the MAC bearer corresponding to the multiple UEs in the MAC PDU by using the UE as a group, where one UE of each UE corresponds to The positions of the MAC payloads are consecutive, and the positions of the sub-packets corresponding to the MAC payloads of the one UE are consecutive.

Further, the data encapsulating module 901 is specifically configured to use, as the identifier information, a value represented by a reserved bit of each sub-packet header of the multiple sub-packets, where the value represented by the reserved bit is different from the multiple UE - corresponding.

Further, the data encapsulating module 901 is specifically configured to:

The CE is used as the identifier information, where the UE identifier is an identifier of each UE, and each UE corresponds to one MAC CE for carrying the UE identifier and corresponds to one UE identifier; The location of the MAC CE carrying the UE identifier in all MAC payloads of the one UE, indicating the location of all MAC payloads of the one UE in the MAC PDU.

Further, the data encapsulating module 901 is specifically configured to: use the

The MAC CE encapsulates the first or last of all MAC payloads of the one UE.

Further, the data encapsulating module 901 is specifically configured to use the cell radio network temporary identifier C-RNTI of the UE as the identifier information of the UE.

Further, the data encapsulating module 901 is specifically configured to encapsulate, in the packet header, a specific sub-packet header corresponding to each of the UEs, where the specific sub-packet header is used as the identifier information of each UE.

Further, the data encapsulating module 901 is specifically configured to encapsulate, in the packet header, a specific sub-packet header corresponding to each UE in the following manner:

Setting a reserved bit in the specific sub-packet header to a first specific value, and all the sub-packets corresponding to the respective UEs are encapsulated by the respective UEs, where all the UEs correspond to the specific sub-packet headers. The first specific value is the same; in the packet header, the order of occurrence of the group corresponding to each UE It is agreed that the first specific value is the identifier information and is used to determine all sub-packets corresponding to each of the multiple UEs, so that the data receiver determines the order according to the agreement of the UEs. a UE corresponding to all sub-headers corresponding to each UE; or

The LCID field of the specific sub-packet header is set to a second LCID corresponding to each UE, where the specific sub-packet header does not correspond to any MAC payload, the identifier information of the UE is the second LCID, and different UEs are different. a second LCID, and the second LCID is different from a third LCID for identifying the MAC payload.

Further, the data encapsulating module 901 is specifically configured to encapsulate the specific sub-packet header into a first sub-packet header or a last sub-packet header of all sub-packets corresponding to each UE.

This embodiment uses the same technical solution as the above method embodiment, and therefore, the same technical effect is obtained, as described in the method embodiment. Another embodiment of the present invention provides a data transmitting apparatus 100. The apparatus 100 is configured to perform the data receiving method provided by the foregoing embodiment. This embodiment only briefly describes the structure of the apparatus 100. The method examples are described. As shown in FIG. 10, the apparatus includes a receiving module 1001 and a parsing module 1002.

The receiving module 1001 is configured to receive a MAC packet data unit PDU encapsulated with a media access control MAC payload corresponding to multiple user equipment UEs, where the MAC PDU includes a packet header, the MAC payload, and the multiple UEs. Identification information of each UE; the packet header includes a plurality of sub-packets, and the plurality of sub-packets are sub-packets corresponding to MAC bearers corresponding to each of the multiple UEs, where each The MAC bearer corresponding to the UE includes a MAC Control Unit CE and/or a MAC Service Data Unit SDU, and the identifier information is used to identify the UEs;

The parsing module 1002 is configured to determine, according to the identifier information of the UEs in the MAC PDU received by the receiving module 1001, and the packet header, parsing the MAC PDU to determine the corresponding to each of the MAC bearers. Each UE.

Specifically, the parsing module 1002 is specifically configured to parse the MAC PDU to determine the respective UEs corresponding to each of the MAC bearers as follows:

If the identification information is a specific sub-packet header, determining UEs corresponding to the plurality of specific sub-packets according to an order in which the plurality of specific sub-packets in the MAC PDU appear, and according to the plurality of specific sub-packets Determining, in a header, all MAC payloads of the UE corresponding to each of the specific sub-packets, wherein the reserved bits in the specific sub-packet are set to a first specific value, and all The first specific value in the specific sub-packet header corresponding to the UE is the same; in the packet header, the corresponding MAC bearer of each UE appears as a group, and the order of the group is agreed, the first specific The value is the identifier information, and is used to determine all sub-packets corresponding to each of the multiple UEs; or if the identifier information is a specific sub-packet header, according to multiple specific sub-packets in the MAC PDU Determining a UE corresponding to the plurality of specific sub-packets, and determining, according to a location of the plurality of specific sub-packets in the header, the UE corresponding to each of the specific sub-packets Place There is a MAC payload, where a logical channel identifier LCID field in the specific sub-packet header is set to the first LCID and the first LCID in the specific sub-packet header corresponding to all UEs is the same. The first LCID is used to determine all sub-packets corresponding to each of the multiple UEs; in the header, the corresponding MAC load of each UE appears as a group, and the order of the group is agreed; or

This embodiment uses the same technical solution as the above method embodiment, and therefore, the same technical effect is obtained, as described in the method embodiment.

Another embodiment of the present invention provides a baseband processor 1100. The baseband processor 1100 is configured to perform the data receiving method provided by the foregoing embodiment. This embodiment only briefly describes the structure of the baseband processor 1100. The principles can be combined as described in the method embodiments. As shown in FIG. 11, the baseband processor 1100 includes a data processing module 1110 and an output module 1120.

The data processing module 1110 is configured to encapsulate a media access control MAC payload corresponding to multiple user equipments UE in a MAC packet data unit PDU, where the MAC PDU includes a packet header, the MAC payload, and the multiple Identification information of each UE in the UE; the packet header includes a plurality of sub-packets, and the plurality of sub-packets are sub-packets corresponding to MAC bearers corresponding to each of the multiple UEs, and the MAC corresponding to each UE The payload includes a MAC Control Element CE and/or a MAC Service Data Unit SDU, the identification information being used to identify the respective UEs;

The output module 1120 is configured to output the MAC PDU encapsulated by the data processing module 1110.

Optionally, the data processing module 1110 is specifically configured to: encapsulate the MAC bearer corresponding to the multiple UEs in the MAC PDU by using the UE as a group, where one UE of each UE corresponds to The location of the MAC payload is continuous, and the MAC load pair corresponding to the one UE The position of the sub-header should be continuous.

Further, the data processing module 1110 is specifically configured to: use, as the identifier information, a value represented by a reserved bit of each sub-packet header of the multiple sub-packets, where the reserved bit represents a value and the multiple UE - corresponding.

Further, the data processing module 1110 is specifically configured to:

The MAC CE is used as the identifier information, where the UE identifier is an identifier of each UE, and each UE corresponds to one MAC CE for carrying the UE identifier and corresponds to one UE identifier; The location of the MAC CE carrying the UE identity in all MAC payloads of the one UE, indicating the location of all MAC bearers of the one UE in the MAC PDU.

Further, the data processing module 1110 is specifically configured to encapsulate the MAC CE used to carry the UE identifier in the first or last of all MAC loads of the one UE.

Further, the data processing module 1110 is specifically configured to use the cell radio network temporary identifier C-RNTI of the UE as the identifier information of the UE.

Further, the data processing module 1110 is specifically configured to encapsulate, in the packet header, a specific sub-packet header corresponding to each of the UEs, where the specific sub-packet header is used as the identifier information of each UE.

Further, the data processing module 1110 is specifically configured to encapsulate, in the packet header, a specific sub-packet header corresponding to each UE in the following manner:

Setting a reserved bit in the specific sub-packet header to a first specific value, and all the sub-packets corresponding to the respective UEs are encapsulated by the respective UEs, where all the UEs correspond to the specific sub-packet headers. The first specific value is the same; in the packet header, the order of occurrence of the group corresponding to each UE is agreed, and the first specific value is the identifier information and is used to determine the multiple UEs. All the sub-packets corresponding to each UE, so that the data receiver determines the UE corresponding to all the sub-packets corresponding to each UE according to the order of the respective UEs; or Setting the LCID field in the specific sub-packet header to the first LCID, and all the sub-packets corresponding to the respective UEs are encapsulated by the respective UEs, where the identifier information is the first LCID, and The first LCID in the specific sub-packet header corresponding to all UEs is the same, and the first LCID is used to determine all sub-packets corresponding to each of the multiple UEs, so that the data receivers are according to the UEs. The order of the agreement determines the UE corresponding to all sub-packets corresponding to each UE; or

Further, the data processing module 1110 is specifically configured to encapsulate the specific sub-packet header into a first sub-packet header or a last sub-packet header of all sub-packets corresponding to each UE.

This embodiment uses the same technical solution as the above method embodiment, and therefore, the same technical effect is obtained, as described in the method embodiment. Another embodiment of the present invention provides a baseband processor 1200. The baseband processor 1200 is configured to perform the data receiving method provided by the foregoing embodiment. In this embodiment, only the structure of the baseband processor 1200 is simply described. The principles can be combined as described in the method embodiments. As shown in FIG. 10, the apparatus includes an input module 1210 and a data processing module 1220.

The input module 1210 is configured to receive a MAC packet data unit PDU encapsulated with a media access control MAC payload corresponding to multiple user equipments, where the MAC PDU includes a packet header, the MAC payload, and the multiple The identifier information of each UE in the UE; the packet header includes a plurality of sub-packets, and the plurality of sub-packets are sub-packets corresponding to MAC bearers corresponding to each of the multiple UEs, and the MAC payload corresponding to each UE The MAC control unit CE and/or the MAC service data unit SDU, where the identifier information is used to identify the UEs; The data processing module 1220 is configured to determine, according to the identifier information of the each UE in the MAC PDU received by the input module 1210, and the packet header, parsing the MAC PDU to determine that each of the MAC bearers corresponds to Each of the described UEs.

Specifically, the data processing module 1220 is specifically configured to: parse the MAC PDU to determine the respective UEs corresponding to each of the MAC payloads as follows:

If the identification information is a specific sub-packet header, determining UEs corresponding to the plurality of specific sub-packets according to an order in which the plurality of specific sub-packets in the MAC PDU appear, and according to the plurality of specific sub-packets Determining, in a header, all MAC payloads of the UE corresponding to each of the specific sub-packets, wherein the reserved bits in the specific sub-packet are set to a first specific value, and all The first specific value in the specific sub-packet header corresponding to the UE is the same; in the packet header, the corresponding MAC bearer of each UE appears as a group, and the order of the group is agreed, the first specific The value is the identifier information, and is used to determine all sub-packets corresponding to each of the multiple UEs; or if the identifier information is a specific sub-packet header, according to multiple specific sub-packets in the MAC PDU Determining, determining, by the plurality of specific sub-packets, the UE, and determining, according to the location of the plurality of specific sub-packets in the header, each of the specific sub-packet headers All the MAC bearers of the UE, where the logical channel identifier LCID field in the specific sub-packet header is set to the first LCID and the first LCID in the specific sub-packet header corresponding to all UEs is the same. The first LCID is used to determine all sub-packets corresponding to each of the multiple UEs; in the header, the corresponding MAC load of each UE appears as a group, and the order of the group is agreed; or

If the identification information is a specific sub-packet header, according to multiple specific sub-portions in the MAC PDU Determining, by the value of the LCID field in the packet header, the UE corresponding to the plurality of specific sub-packets, and determining, according to the location of the plurality of specific sub-packets in the header, each specific one of the plurality of specific sub-packets All the MAC bearers of the UE corresponding to the packet header, wherein the value of the LCID is a second LCID, the identifier information of the UE is the second LCID, the different UEs correspond to different second LCIDs, and the second The LCID is different from the third LCID used to identify the MAC payload. In the packet header, the respective UE corresponding MAC payloads appear as a group of UEs.

This embodiment and the above method embodiment use the same technical solution, and therefore, the same technical effects are obtained, as described in the method embodiment. Through the description of the above embodiments, it will be apparent to those skilled in the art that the present invention can be implemented in hardware, firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a computer. For example, but not limited to: the computer readable medium may include a read only memory (ROM), a random access memory (RAM), or other optical disk storage, a magnetic disk storage medium, or other magnetic storage device. Or can be used to carry or store any other medium having the desired program code in the form of an instruction or data structure and being accessible by a computer. Also. Any connection may suitably be a computer readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line) or wireless technologies such as infrared, radio, and microwave, Then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, wireless and microwave are included in the fixing of the associated medium. As used in the present invention, a disk and a disc include a compact disc (CD: Compressed Disk), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disc, and a Blu-ray disc, wherein the disc is usually magnetically replicated. , the disc is optically replicated with a laser Data. Combinations of the above should also be included within the scope of the computer readable media. In summary, the above description is only a preferred embodiment of the technical solution of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Rights request

1. A data sending method, characterized in that the method includes:

Encapsulate the media access control MAC payloads corresponding to multiple user equipment UEs in a MAC packet data unit PDU, where the MAC PDU includes a packet header, the MAC payload and the identification information of each UE among the multiple UEs; The packet header includes a plurality of sub-packet headers, and the plurality of sub-packet headers are sub-packet headers respectively corresponding to the MAC load corresponding to each UE in the plurality of UEs. The MAC load corresponding to each UE includes a MAC control element CE and/or MAC service data unit SDU, the identification information is used to identify each UE; and

Send the MAC PDU.

2. The method according to claim 1, characterized in that: encapsulating data corresponding to multiple UEs in one MAC PDU includes:

The MAC payloads corresponding to the multiple UEs are encapsulated in the MAC PDU in groups of the UEs, where the position of the MAC load corresponding to one UE among the UEs is continuous, and the MAC load corresponding to the one UE is continuous. The positions of the sub-headers corresponding to the payload are continuous.

3. The method according to claim 1 or 2, characterized in that,

The identification information is a value represented by a reserved bit of each sub-header in the plurality of sub-headers, wherein the value represented by the reserved bit corresponds to the plurality of UEs.

4. The method of claim 2, characterized in that,

The identification information is a MAC CE used to carry the UE identity, wherein the UE identity is the identity of each UE, and each UE corresponds to one MAC CE used to carry the UE identity and corresponds to one UE identity; The position of the MAC CE used to carry the UE identity in all MAC loads of the one UE indicates the position of all MAC loads of the one UE in the MAC PDU.

5. The method of claim 4, wherein the MAC CE used to carry the UE identity is located at the first or last of all MAC payloads of the one UE.

6. The method according to claim 4 or 5, characterized in that the identification information indicating the UE is the cell radio network temporary identity C-RNTI of the UE.

7. The method of claim 2, characterized in that,

All sub-headers corresponding to each UE include a specific sub-header, where the specific sub-header serves as the identification information of each UE.

8. The method of claim 7, characterized in that,

The specific sub-header includes 2 reserved bits, the reserved bits in the specific sub-header are set to a first specific value, and the first specific value in the specific sub-header corresponding to all UEs is the same; so In the header, the groups corresponding to each UE appear in an agreed order, and the first specific value is the identification information, and is used to determine all sub-headers corresponding to each UE in the plurality of UEs, so that according to the The agreed order of each UE determines the UE corresponding to all sub-headers corresponding to each UE; or the specific sub-header includes a logical channel identification LCID field, and the LCID field of the specific sub-header is set to the first LCID , and in the header, the groups corresponding to each UE appear in an agreed order, wherein the identification information is the first LCID and the first LCID in the specific sub-header corresponding to all UEs is the same , the first LCID is used to determine all sub-packet headers corresponding to each UE among the plurality of UEs, thereby determining the UE corresponding to all sub-packet headers corresponding to each UE according to the agreed order of the respective UEs. ; or

The specific sub-header includes a logical channel identification LCID field, the LCID field of the specific sub-header is set to the second LCID corresponding to each UE, and the specific sub-header does not correspond to any MAC payload, wherein, the UE's The identification information is the second LCID, different UEs correspond to different second LCIDs, and the second LCID is different from the third LCID used to identify the MAC payload.

9. The method according to claim 7 or 8, characterized in that,

The specific sub-packet header is the first sub-packet header or the last sub-packet header among all sub-packet headers corresponding to the MAC payload corresponding to the one UE.

10. A data receiving method, characterized in that the method includes: Receive a MAC packet data unit PDU encapsulated with media access control MAC payloads corresponding to multiple user equipment UEs, wherein the MAC PDU includes a packet header, the MAC payload, and identification information of each UE among the multiple UEs; The packet header includes a plurality of sub-packet headers, and the plurality of sub-packet headers are sub-packet headers respectively corresponding to the MAC load corresponding to each UE in the plurality of UEs, and the MAC load corresponding to each UE includes a MAC control element CE and/or MAC service data unit SDU, the identification information is used to identify each UE; and

According to the identification information and the packet header of each UE in the MAC PDU, the MAC PDU is parsed to determine the UE corresponding to each of the MAC payloads.

11. The method of claim 10, wherein the step of parsing the MAC PDU to determine the data corresponding to each UE according to the identification information of each UE in the MAC PDU and the packet header includes:

If the identification information is a value represented by a reserved bit of each sub-header in the plurality of sub-headers, determine the corresponding UE according to the value of the identification of the reserved bit; or

If the identification information is a MAC CE used to carry the UE identity, the UE corresponding to the UE identity is determined based on the MAC CE used to carry the UE identity, and the UE corresponding to the UE identity is determined based on the MAC CE used to carry the UE identity. The position in all MAC payloads of the UE corresponding to the UE identification determines all the MAC payloads of the UE corresponding to the UE identification; or

If the identification information is a specific sub-header, the UE corresponding to the multiple specific sub-headers is determined based on the order in which the multiple specific sub-headers appear in the MAC PDU, and the UE corresponding to the multiple specific sub-headers is determined based on the multiple specific sub-headers. The position in the packet header determines all MAC payloads of the UE corresponding to each specific sub-packet header in the multiple specific sub-packet headers, where the reserved bits in the specific sub-packet header are set to a first specific value, and all The first specific value in the specific sub-header corresponding to the UE is the same; in the header, the MAC payload corresponding to each UE appears in a group of UEs, the order of the groups is agreed upon, and the first specific value The value is the identification information, and is used to determine all sub-headers corresponding to each UE among the multiple UEs; or If the identification information is a specific sub-header, the UE corresponding to the multiple specific sub-headers is determined based on the order in which the multiple specific sub-headers appear in the MAC PDU, and the UE corresponding to the multiple specific sub-headers is determined based on the multiple specific sub-headers. The position in the packet header determines all MAC payloads of the UE corresponding to each specific sub-header in the multiple specific sub-headers, wherein the logical channel identification LCID field in the specific sub-header is set to the first LCID And the first LCID in the specific sub-header corresponding to all UEs is the same, and the first LCID is used to determine all sub-headers corresponding to each UE in the plurality of UEs; in the header, each of the The MAC payload corresponding to the UE appears in groups of UEs, and the order of the groups is agreed upon; or

If the identification information is a specific sub-header, determine the UE corresponding to the multiple specific sub-headers according to the value of the LCID field in the multiple specific sub-headers in the MAC PDU, and determine the UE corresponding to the multiple specific sub-headers based on the multiple specific sub-headers. position in the packet header, determine all MAC payloads of the UE corresponding to each specific sub-header in the plurality of specific sub-headers, where the value of the LCID is the second LCID, and the identification information of the UE is the second LCID, different UEs correspond to different second LCIDs, and the second LCID is different from the third LCID used to identify the MAC load. In the header, the MAC load corresponding to each UE is UE Appears for the group.

12. A data sending device, characterized in that the device includes:

A data encapsulation module, configured to encapsulate the media access control MAC payloads corresponding to multiple user equipments UE in a MAC packet data unit PDU, wherein the MAC PDU includes a packet header, the MAC payload and the MAC payload in the multiple UEs. Identification information of each UE; The header includes a plurality of sub-headers, the plurality of sub-headers are sub-headers corresponding to the MAC load corresponding to each UE in the plurality of UEs, and the MAC load corresponding to each UE includes a MAC Control unit CE and/or MAC service data unit SDU, the identification information is used to identify each UE; and

The sending module is configured to send the MAC PDU encapsulated by the data encapsulation module to the data receiver.

13. The device according to claim 12, characterized in that,

The data encapsulation module is specifically configured to encapsulate the MAC payloads corresponding to the plurality of UEs in the MAC PDU in groups of the UEs, where one of the UEs is The position of the corresponding MAC payload is continuous, and the position of the sub-header corresponding to the MAC load corresponding to the one UE is continuous.

14. The device according to claim 12 or 13, characterized in that,

The data encapsulation module is specifically configured to use the value represented by the reserved bits of each sub-header in the plurality of sub-headers as the identification information, wherein the value represented by the reserved bits is the same as the value represented by the plurality of UEs— to ₀

15. The device according to claim 13, characterized in that,

The data encapsulation module is specifically configured to use the MAC CE used to carry the UE identification as the identification information, wherein the UE identification is the identification of each UE, and each UE corresponds to one of the UE identification information. The MAC CE of the UE identity corresponds to one UE identity; the position of the MAC CE used to carry the UE identity in all MAC loads of the one UE indicates that all the MAC loads of the one UE are in the Position in MAC PDU.

16. The device according to claim 15, characterized in that,

The data encapsulation module is specifically configured to encapsulate the MAC CE used to carry the UE identity in the first or last one of all MAC loads of the one UE.

17. The apparatus according to claim 15 or 16, wherein the data encapsulation module is specifically configured to use the cell radio network temporary identifier C-RNTI of the UE as the identification information of the UE.

18. The device according to claim 13, wherein the data encapsulation module is specifically configured to encapsulate in the header a specific sub-header corresponding to each UE, wherein the specific sub-header is as The identification information of each UE.

19. The device according to claim 18, characterized in that,

The data encapsulation module is specifically used to encapsulate the specific sub-header corresponding to each UE in the header in the following manner:

The reserved bits in the specific sub-packet header are set to a first specific value, and all sub-packet headers corresponding to the respective UEs are encapsulated in groups of the respective UEs, wherein, in the specific sub-packet headers corresponding to all UEs, The first specific values of are the same; In the header, the order of appearance of the groups corresponding to each UE is The order is agreed upon, and the first specific value is the identification information and is used to determine all sub-packet headers corresponding to each of the plurality of UEs, so that the data receiver determines according to the agreed order of the respective UEs. The UEs corresponding to all sub-headers corresponding to each UE; or

The LCID field in the specific sub-header is set to the first LCID, and all sub-headers corresponding to the respective UEs are encapsulated in groups of the respective UEs, where the identification information is the first LCID, and The first LCID in the specific sub-header corresponding to all UEs is the same, and the first LCID is used to determine all sub-headers corresponding to each UE among the plurality of UEs, so that the data receiver can The agreed order determines the UE corresponding to all sub-headers corresponding to each UE; or

The LCID field of the specific sub-packet header is set to the second LCID corresponding to each UE, wherein the specific sub-packet header does not correspond to any MAC payload, the identification information of the UE is the second LCID, and different UEs correspond to different a second LCID, and the second LCID is different from the third LCID used to identify the MAC payload.

20. The device according to claim 18 or 19, characterized in that,

The data encapsulation module is specifically configured to encapsulate the specific sub-header into the first sub-header or the last sub-header among all sub-headers corresponding to each UE.

21. A data receiving device, characterized in that the device includes:

A receiving module, configured to receive a MAC packet data unit PDU encapsulated with media access control MAC payloads corresponding to multiple user equipments UE, where the MAC PDU includes a packet header, the MAC payload and each of the multiple UEs. Identification information of the UE; the header includes multiple sub-headers, the multiple sub-headers are sub-headers corresponding to the MAC load corresponding to each UE in the multiple UEs, and the MAC load corresponding to each UE includes MAC control Unit CE and/or MAC service data unit SDU, the identification information is used to identify each UE; and

A parsing module, configured to parse the MAC PDU to determine the UEs corresponding to each of the MAC payloads according to the identification information and the packet header of each UE in the MAC PDU received by the receiving module.

22. The apparatus according to claim 21, wherein the parsing module is specifically configured to parse the MAC PDU in the following manner to determine each UE corresponding to each of the MAC payloads:

If the identification information is a specific sub-header, the UE corresponding to the multiple specific sub-headers is determined based on the order in which the multiple specific sub-headers appear in the MAC PDU, and the UE corresponding to the multiple specific sub-headers is determined based on the multiple specific sub-headers. The position in the packet header determines all MAC payloads of the UE corresponding to each specific sub-packet header in the multiple specific sub-packet headers, where the reserved bits in the specific sub-packet header are set to a first specific value, and all The first specific value in the specific sub-header corresponding to the UE is the same; in the header, the MAC payload corresponding to each UE appears in a group of UEs, the order of the groups is agreed upon, and the first specific value The value is the identification information, and is used to determine all sub-headers corresponding to each UE among the multiple UEs; or

If the identification information is a specific sub-header, the UE corresponding to the multiple specific sub-headers is determined based on the order in which the multiple specific sub-headers appear in the MAC PDU, and the UE corresponding to the multiple specific sub-headers is determined based on the multiple specific sub-headers. The position in the packet header determines all MAC payloads of the UE corresponding to each specific sub-header in the multiple specific sub-headers, where the logical channel identification LCID field in the specific sub-header is set to the first LCID And the first LCID in the specific sub-header corresponding to all UEs is the same, and the first LCID is used to determine all sub-headers corresponding to each UE in the plurality of UEs; in the header, each of the The MAC payload corresponding to the UE appears in groups of UEs, and the order of the groups is agreed upon; or

If the identification information is a specific sub-header, determine the UE corresponding to the multiple specific sub-headers according to the value of the LCID field in the multiple specific sub-headers in the MAC PDU, and determine the UE corresponding to the multiple specific sub-headers according to the multiple The position of the specific sub-header in the header determines all MAC loads of the UE corresponding to each specific sub-header in the plurality of specific sub-headers, where the value of the LCID is the second LCID, and the UE The identification information is the second LCID. Different UEs correspond to different second LCIDs, and the second LCID is different from the third LCID used to identify the MAC payload. In the header, each UE corresponds to the MAC Payloads appear in groups of UEs.

23. A data sending device, characterized in that the device includes:

The baseband processor is configured to encapsulate the media access control MAC payloads corresponding to multiple user equipments UE in a MAC packet data unit PDU, wherein the MAC PDU includes a packet header, the MAC payload and the MAC payload in the multiple UEs. Identification information of each UE; The header includes a plurality of sub-headers, the plurality of sub-headers are sub-headers corresponding to the MAC load corresponding to each UE in the plurality of UEs, and the MAC load corresponding to each UE includes a MAC Control unit CE and/or MAC service data unit SDU, the identification information is used to identify each UE; and

A transmitter, configured to send the MAC PDU encapsulated by the baseband processor to the data receiver.

24. The device according to claim 23, characterized in that,

The baseband processor is specifically configured to encapsulate the MAC payloads corresponding to the plurality of UEs in the MAC PDU in groups of the UEs, wherein the positions of the MAC payloads corresponding to one UE among the UEs are consecutive. , and the positions of the sub-headers corresponding to the MAC payload corresponding to one UE are continuous.

25. The device according to claim 23 or 24, characterized in that,

The baseband processor is specifically configured to use the value represented by the reserved bits of each sub-header in the plurality of sub-packet headers as the identification information, wherein the value represented by the reserved bits is the same as that of the plurality of UEs— correspond.

26. The device according to claim 24, characterized in that,

The baseband processor is specifically configured to use the MAC CE used to carry the UE identity as the identification information, wherein the UE identity is the identity of each UE, and each UE corresponds to one of the MAC CEs used to carry the UE identity. The MAC CE of the UE identity corresponds to one UE identity; the The position of the MAC CE carrying the UE identity in all MAC payloads of the one UE indicates the position of all MAC payloads of the one UE in the MAC PDU.

27. The device according to claim 26, characterized in that,

The baseband processor is specifically configured to encapsulate the MAC CE used to carry the UE identity in the first or last one of all MAC payloads of the one UE.

28. The apparatus according to claim 26 or 27, wherein the baseband processor is specifically configured to use the cell radio network temporary identifier C-RNTI of the UE as the identification information of the UE.

29. The apparatus according to claim 24, wherein the baseband processor is specifically configured to encapsulate in the header a specific sub-header corresponding to each UE, wherein the specific sub-header is as The identification information of each UE.

30. The device according to claim 29, characterized in that,

The baseband processor is specifically configured to encapsulate the specific sub-header corresponding to each UE in the header in the following manner:

Set the reserved bits in the specific sub-packet header to a first specific value, and encapsulate all sub-packet headers corresponding to each UE in groups of each UE, wherein, in the specific sub-packet header corresponding to all UEs, The first specific values are the same; in the header, the order of appearance of the groups corresponding to each UE is agreed upon, and the first specific value is the identification information and is used to determine which of the multiple UEs All sub-packet headers corresponding to each UE, so that the data receiver determines the UE corresponding to all sub-packet headers corresponding to each UE according to the agreed order of each UE; or

The LCID field in the specific sub-header is set to the first LCID, and all sub-headers corresponding to the respective UEs are encapsulated in groups of the respective UEs, where the identification information is the first LCID, and The first LCID in the specific sub-header corresponding to all UEs is the same, and the first LCID is used to determine all sub-headers corresponding to each UE among the plurality of UEs, so that the data receiver can The agreed order determines the UE corresponding to all sub-headers corresponding to each UE; or The LCID field of the specific sub-packet header is set to the second LCID corresponding to each UE, wherein the specific sub-packet header does not correspond to any MAC payload, the identification information of the UE is the second LCID, and different UEs correspond to different a second LCID, and the second LCID is different from the third LCID used to identify the MAC payload.

31. The device according to claim 29 or 30, characterized in that,

32. A data receiving device, characterized in that the device includes:

A receiver configured to receive a MAC packet data unit PDU encapsulated with media access control MAC payloads corresponding to multiple user equipments UE, wherein the MAC PDU includes a packet header, the MAC payload and each of the multiple UEs. Identification information of the UE; the header includes multiple sub-headers, the multiple sub-headers are sub-headers corresponding to the MAC load corresponding to each UE in the multiple UEs, and the MAC load corresponding to each UE includes MAC control Unit CE and/or MAC service data unit SDU, the identification information is used to identify each UE; and

A baseband processor, configured to parse the MAC PDU to determine the corresponding MAC payloads according to the identification information and the packet header of each UE in the MAC PDU received by the receiving module. UE.

33. The apparatus according to claim 32, wherein the baseband processor is specifically configured to parse the MAC PDU in the following manner to determine each UE corresponding to each of the MAC payloads:

If the identification information is a MAC CE used to carry the UE identity, the UE corresponding to the UE identity is determined based on the MAC CE used to carry the UE identity, and the UE corresponding to the UE identity is determined based on the MAC CE used to carry the UE identity. The position in all MAC payloads of the UE corresponding to the UE identification determines all the MAC payloads of the UE corresponding to the UE identification; or If the identification information is a specific sub-header, the UE corresponding to the multiple specific sub-headers is determined based on the order in which the multiple specific sub-headers appear in the MAC PDU, and the UE corresponding to the multiple specific sub-headers is determined based on the multiple specific sub-headers. The position in the packet header determines all MAC payloads of the UE corresponding to each specific sub-packet header in the plurality of specific sub-packet headers, where the reserved bits in the specific sub-packet header are set to a first specific value, and all The first specific value in the specific sub-header corresponding to the UE is the same; in the header, the MAC payloads corresponding to each UE appear in groups of UEs, the order of the groups is agreed upon, and the first specific value The value is the identification information, and is used to determine all sub-headers corresponding to each UE among the multiple UEs; or

If the identification information is a specific sub-header, determine the UE corresponding to the multiple specific sub-headers according to the value of the LCID field in the multiple specific sub-headers in the MAC PDU, and determine the UE corresponding to the multiple specific sub-headers based on the multiple specific sub-headers. At the position in the packet header, determine all MAC payloads of the UE corresponding to each specific sub-header in the multiple specific sub-headers, where the value of the LCID is the second LCID, and the identification information of the UE is the second LCID, different UEs correspond to different second LCIDs, and the second LCID is different from the third LCID used to identify the MAC load. In the header, the MAC load corresponding to each UE is UE Appears for the group.

34. A data transmission system, characterized by comprising the data sending device as claimed in any one of claims 12 to 20 and the data receiving device as claimed in claim 21 or 22.

35. A data transmission system, characterized by comprising the data sending device according to any one of claims 23 to 31 and the data receiving device according to claim 32 or 33.

36. A baseband processor, characterized in that it is used to perform the steps in the method according to any one of claims 1 to 11.

37. A baseband processor, characterized in that it is used to perform the steps in the method as claimed in claim 12 or 13.